A gamer who lost his arm built a one-handed controller after existing hardware failed him

After losing his right arm, Joe built the ERCHAM MK1, a one-handed PC controller that combines mouse and keyboard functions.

The prototype gained major attention on Reddit, including from the pcmasterrace community, for its accessibility-focused design.

ERCHAM MK1 points to strong demand for gaming peripherals that better support amputees, injured players, and other users who need alternate inputs.

Joe also placed fourth in the Entrepreneur of Impact competition, boosting visibility for the project.